[PATCH] Replace mp bus array with bitmap for bus not pci

Since we only support PCI and ISA legacy busses now there is no need to
have an full array with checking.

Signed-off-by: Andi Kleen <ak@suse.de>

1 files changed, 4 insertions, 5 deletions

diff --git a/arch/x86_64/kernel/mpparse.c b/arch/x86_64/kernel/mpparse.c
index c12acc3b5552..a8d38c0bb449 100644
--- a/arch/x86_64/kernel/mpparse.c
+++ b/arch/x86_64/kernel/mpparse.c
@@ -42,7 +42,7 @@ int acpi_found_madt;
  * MP-table.
  */
 unsigned char apic_version [MAX_APICS];
-unsigned char mp_bus_id_to_type [MAX_MP_BUSSES] = { [0 ... MAX_MP_BUSSES-1] = -1 };
+DECLARE_BITMAP(mp_bus_not_pci, MAX_MP_BUSSES);
 int mp_bus_id_to_pci_bus [MAX_MP_BUSSES] = { [0 ... MAX_MP_BUSSES-1] = -1 };
 
 static int mp_current_pci_id = 0;
@@ -173,9 +173,9 @@ static void __init MP_bus_info (struct mpc_config_bus *m)
         Dprintk("Bus #%d is %s\n", m->mpc_busid, str);
 
         if (strncmp(str, "ISA", 3) == 0) {
-                mp_bus_id_to_type[m->mpc_busid] = MP_BUS_ISA;
+                set_bit(m->mpc_busid, mp_bus_not_pci);
         } else if (strncmp(str, "PCI", 3) == 0) {
-                mp_bus_id_to_type[m->mpc_busid] = MP_BUS_PCI;
+                clear_bit(m->mpc_busid, mp_bus_not_pci);
                 mp_bus_id_to_pci_bus[m->mpc_busid] = mp_current_pci_id;
                 mp_current_pci_id++;
         } else {
@@ -808,8 +808,7 @@ void __init mp_config_acpi_legacy_irqs (void)
         /* 
          * Fabricate the legacy ISA bus (bus #31).
          */
-        mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA;
-        Dprintk("Bus #%d is ISA\n", MP_ISA_BUS);
+        set_bit(MP_ISA_BUS, mp_bus_not_pci);
 
         /* 
          * Locate the IOAPIC that manages the ISA IRQs (0-15).